Pitchers need to work out and strengthen both sides of their body equally. Pitching only causes one side to develop more than the other and puts undue stress on them.
We took our dd to the chiropractor and learned a lot about decompression of the spine. Some times simple things like quality of foot wear and mattress can cause the back to hurt. The act of pitching made it worse for my dd, because she was too stiff with her plant foot. Pinched nerves work in funny ways and my dd goes to chiro. about every 3 months and gets on our inversion table. We are firm believers in inversion tables.
Pitchers need to work out and strengthen both sides of their body equally. Pitching only causes one side to develop more than the other and puts undue stress on them.